This paper shows that, in a partially welfarist framework that permits discounting, per-period social evaluations can be consistent with a timeless social ordering only if social principles lead to the repugnant conclusion. The same result applies if per-period social evaluations are replaced by...

This paper provides necessary and sufficient conditions for input (or output) aggregation of efficiency indices. As such it parallels earlier arguments in the capital aggregation literature. The resulting quantity-dependent indices provide a rationalisation of the Debreu/Farrell efficiency...

This paper provides a survey of normative approaches to inequality measurement, to be published as a chapter in a volume of income inequality. We present general methods for deriving ethical inequality indexes from social-evaluation orderings such as the Atkinson-Kolm-Sen and Kolm procedures.

This paper analyzes variable-population social-evaluation principles in a framework where outcomes are uncertain. In a static model, we provide characterizations of expected-utility versions of Critical-Level Generalized Utilitarian rules.